Absolutely nothing different. I rarely give my horses treats of any sort. I never feed them anything out of my hand except in the show ring and that is strictly for the purpose of getting the best "look" to their neck/topline, etc. Feed a horse out of your hand and you end up with one that starts nipping, looking for treats, and nipping is something I do not tolerate. On the rare occasion my horses are allowed a treat - it might be a small piece of carrot or small piece of apple - and only if it is placed in a bucket or in the feed bunk.
Treats are the main reason Shetlands have such a poor reputation. Too many turned their kids (or unknowing adults) loose with them with treats fed out of their hands. And when the poor pony - who doesn't know any better - got in the habit of finding treats in little fingers, and then some times those hands were empty - well, it was NOT the pony's fault that those fingers got nipped !!!!!!!!!